HYDROCARBON REDUCTIONS THROUGH PRECOMBUSTION CHAMBER DESIGN IN A NATURAL GAS LEAN BURN ENGINE. TOPICAL REPORT, FEBRUARY-OCTOBER 1990
A study was conducted to evaluate the effects of various precombustion chamber design, operating, and control parameters on the exhaust emissions of natural gas research engine. Analysis of the results showed that engine-out total hydrocarbons and oxides of nitrogen can be reduced, relative to conventional methods, through precombustion chamber design. More specifically, a novel staged prechamber yielded significant reductions in NOx and total hydrocarbon emissions by promoting stable ignition while operating with a high percentage of theoretical excess air. Relatively light load and fuel lean operation with the Staged Prechamber simultaneously reduced baseline NOx and hydrocarbons by 47% and 14%, respectively. Emissions reductions were realized at other loads and air/fuel ratios to lesser exteents. The purpose of the report is to identify and explain positive and deleterious effects of natural gas prechamber design on exhaust emissions.
Southwest Research Institute6220 Culebra Road, P.O. Drawer 28510
San Antonio, TX United States 78228-0510
- Crane, M
- Publication Date: 1991-9
- Pagination: 104 p.
- TRT Terms: Air quality management; Combustion chambers; Diesel engines; Hydrocarbons; Lean fuel mixtures; Natural gas; Nitric oxide; Nitrogen oxides
- Old TRIS Terms: Lean fuel engine; Precombustion diesel engines
- Subject Areas: Energy; Highways;
- Accession Number: 00623170
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: SWRI-3178-2-1, GETA-91-08, GRI-91/0237
- Files: TRIS
- Created Date: Jul 31 1992 12:00AM